good data structure + simple algorithm.

Seven-segment display.py

num2str = {
    k: v.split("\n")[1:]
    for k, v in {
        1: """
   
  |
  |""",
        2: """
 _ 
 _|
|_ """,
        3: """
 _ 
 _|
 _|""",
        4: """

|_|
  |""",
        5: """
 _
|_
 _|""",
        6: """
 _ 
|_ 
|_|""",
        7: """
 _ 
  |
  |""",
        8: """
 _
|_|
|_|""",
        9: """
 _ 
|_|
 _|""",
        0: """
 _
| |
|_|""",
    }.items()
}
s = list(map(int, filter(str.isdigit, input())))
for i in range(3):
    for j in s:
        print(f"{num2str[j][i]:<4}", end="")
    print()